I've always been a big Goff fan. Very good QB. Very good teammate. Very pretty ball. He can make all the throws and has some serious touch on his deep ball when he opts to throw it. The world seems to forget just how good his arm talent is. He was a #1 overall pick for a reason. He also has a calming presence about him that I think can settle down teammates when required. He's tough, reliable, and never misses games. Guts it out when injured (see: playoff win with a broken thumb). Rarely throws INTs but is prone to fumbles, both in terms of ball security when hit, and his throwing wind up bringing the ball back far while also not being the quickest release. Which leads me to.... he does need protection.
All QBs needs protection of course. But Goff's spread between effectiveness when protected vs. ineffectiveness when under constant duress might be the biggest in the NFL. He goes from Pro Browl caliber to backup. I always found that surprising, as coming out of college, the tape suggested he would navigate that area of the game better. Regardless, it is no mystery he looked good as a Ram when the offensive line was strong, bad when it collapsed, and is now looking good again in Detroit behind a stout o-line.
He has definitely gotten better at reading defences since going to Detroit. He probably would not have if he stayed a Ram. You can't grow if you don't get opportunities, and McVay refused to stop hand holding. McVay has acknowledged being a bit of an untrusting control freak with the offense, in terms of play calling duties etc. I think the same applied to his handling of Goff.
More than anything, I think Goff's problem towards the end of his tenure in horns was a lack of confidence. And I think that can be largely be placed on McVay's shoulders. The dude completely scapegoated and sewered Goff and put him in the dog house. It's why I've never been a big McVay fan. I'm forever thankful for the results he has brought and the Super Bowl win. And he is a great coach. Top 5 easy IMO. But I find him fake and petty.
I hated the Goff-Stafford trade when it happened. Stafford was and is the better QB. But I didn't think the gap between them was worth two 1st round picks, when you also consider the age difference. I still think it probably isn't, if you try to quantify the talent gap in terms of draft pick value. But in the end, I thankfully proven wrong. The Rams won the Super Bowl and Stafford played incredibly well the entire run. We needed every last bit of whatever gap exists between them to pull it off. The trade was worth it!